522668 has 12 divisors (see below), whose sum is σ = 937272. Its totient is φ = 254880.

The previous prime is 522661. The next prime is 522673. The reversal of 522668 is 866225.

It is a self number, because there is not a number n which added to its sum of digits gives 522668.

It is not an unprimeable number, because it can be changed into a prime (522661) by changing a digit.

522668 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1430 + ... + 1757.

It is an arithmetic number, because the mean of its divisors is an integer number (78106).

2⁵²²⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

522668 is a deficient number, since it is larger than the sum of its proper divisors (414604).

522668 is a wasteful number, since it uses less digits than its factorization.

522668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3232 (or 3230 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 522668 is about 722.9578134304. The cubic root of 522668 is about 80.5518100694.

The spelling of 522668 in words is "five hundred twenty-two thousand, six hundred sixty-eight".